diff options
Diffstat (limited to 'drivers/hwmon/pmbus/zl6100.c')
| -rw-r--r-- | drivers/hwmon/pmbus/zl6100.c | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/drivers/hwmon/pmbus/zl6100.c b/drivers/hwmon/pmbus/zl6100.c index 48c7b4a716ae..e3e8420b7b81 100644 --- a/drivers/hwmon/pmbus/zl6100.c +++ b/drivers/hwmon/pmbus/zl6100.c @@ -33,6 +33,7 @@ enum chips { zl2004, zl2005, zl2006, zl2008, zl2105, zl2106, zl6100, zl6105 }; struct zl6100_data { int id; ktime_t access; /* chip access time */ + int delay; /* Delay between chip accesses in uS */ struct pmbus_driver_info info; }; @@ -52,10 +53,10 @@ MODULE_PARM_DESC(delay, "Delay between chip accesses in uS"); /* Some chips need a delay between accesses */ static inline void zl6100_wait(const struct zl6100_data *data) { - if (delay) { + if (data->delay) { s64 delta = ktime_us_delta(ktime_get(), data->access); - if (delta < delay) - udelay(delay - delta); + if (delta < data->delay) + udelay(data->delay - delta); } } @@ -199,16 +200,11 @@ static int zl6100_probe(struct i2c_client *client, data->id = mid->driver_data; /* - * ZL2005, ZL2008, ZL2105, and ZL6100 are known to require a wait time - * between I2C accesses. ZL2004 and ZL6105 are known to be safe. - * Other chips have not yet been tested. - * - * Only clear the wait time for chips known to be safe. The wait time - * can be cleared later for additional chips if tests show that it - * is not needed (in other words, better be safe than sorry). + * According to information from the chip vendor, all currently + * supported chips are known to require a wait time between I2C + * accesses. */ - if (data->id == zl2004 || data->id == zl6105) - delay = 0; + data->delay = delay; /* * Since there was a direct I2C device access above, wait before |